add minimal model compatibility preflight agent

test_main.py

@@ -0,0 +1,48 @@
+import unittest
+
+from main import ValidationError, analyze
+
+
+class AnalyzeTests(unittest.TestCase):
+    def test_feasible_preflight(self):
+        result = analyze(
+            {
+                "model_name": "example/7b-model",
+                "architecture": "transformer",
+                "parameters_b": 7,
+                "dtype": "bf16",
+                "hardware": "国产算力卡",
+                "device_memory_gb": 24,
+                "cards": 1,
+            }
+        )
+        self.assertEqual(result["verdict"], "preflight_feasible")
+        self.assertGreater(result["estimates"]["headroom_gb"], 0)
+
+    def test_insufficient_memory(self):
+        result = analyze(
+            {
+                "model_name": "example/32b-model",
+                "architecture": "transformer",
+                "parameters_b": 32,
+                "dtype": "bf16",
+                "hardware": "国产算力卡",
+                "device_memory_gb": 24,
+                "cards": 2,
+            }
+        )
+        self.assertEqual(result["verdict"], "insufficient_memory")
+
+    def test_missing_information_is_explicit(self):
+        result = analyze({"model_name": "example/unknown-model"})
+        self.assertEqual(result["verdict"], "information_required")
+        self.assertIn("parameters_b", result["missing_fields"])
+        self.assertIn("device_memory_gb", result["missing_fields"])
+
+    def test_invalid_card_count_is_rejected(self):
+        with self.assertRaises(ValidationError):
+            analyze({"cards": 0})
+
+
+if __name__ == "__main__":
+    unittest.main()